CN204230513U - Electrical micro-machine connector and the connector assembly with this electrical micro-machine connector - Google Patents

Abstract

The utility model discloses a micro-motor connector and a connector assembly having the micro-motor connector. The micro-motor connector is suitable for being installed in an opening of a motor casing of a micro-motor and matched with a mating connector. The micro-motor connector includes: a first insulator; a plurality of power terminals and signal terminals disposed in the first insulator and adapted to be electrically connected to the micro-motor; a first ground terminal configured to be installed on the electrical When in the housing, it is electrically connected to the grounding wire of the micro-motor and the motor housing, and is suitable for electrical contact with the second grounding terminal of the mating connector; and the first sealing ring is arranged around the first insulator and the first grounding terminal , to form a seal between the first insulator and the first ground terminal and the motor housing when the micromotor connector is installed in the motor housing.

Description

Micromotor connector and connector assembly having the micromotor connector

technical field

The utility model relates to the field of micro motors. Specifically, the utility model relates to an electric connector used on a micro-motor.

Background technique

Micro motors or servo motors are widely used in various applications such as machine tools, printing equipment, packaging equipment, textile equipment, robots, automated production lines, etc.

Most of the micro motors on the market now use a connector solution, as shown in Figure 1, a connector assembly 10 is arranged on the micro motor or servo motor 1, and the connector assembly 10 connects the cable 3 from the servo unit 2 to the servo motor The internal circuit (not shown) in 1 is electrically connected so as to perform signal communication between the servo motor 1 and the servo unit 2 and to supply power to the servo motor 1 through the connector assembly 10 and the cable 1 .

The miniaturization of micro-motors and the use of connectors are the future trends, and there is a demand for a solution that can achieve functional requirements, especially the grounding function, while realizing the miniaturization of micro-motor connectors and the waterproof level of IP67.

Contents of the invention

Considering the above requirements, the utility model proposes an improved micro-motor connector, which can meet the grounding function requirements while realizing the miniaturization of the micro-motor connector and IP67 waterproof level.

According to one aspect of the present invention, a micro-motor connector is provided, which is suitable for being installed in the opening of the motor housing of the micro-motor and mated with the mating connector. The micro-motor connector includes:

first insulator;

a plurality of power terminals and signal terminals disposed in the first insulator and adapted to be electrically connected to the micromotor;

The first ground terminal is configured to be electrically connected with the ground wire of the micromotor and the motor casing when the micromotor connector is installed in the motor casing, and is adapted to be in electrical contact with the second ground terminal of the mating connector; and

The first sealing ring is arranged around the first insulator and the first ground terminal to form a seal between the first insulator and the first ground terminal and the motor housing when the micro-motor connector is installed in the motor housing.

Preferably, in the above-mentioned micro-motor connector, the first ground terminal may be substantially U-shaped, and has a first arm, a second arm, a base between the first arm and the second arm, and the protruding end of the second arm extending away from the first arm, wherein the first arm is adapted to make electrical contact with a second ground terminal, the base configured to mount in a motor housing when the micromotor connector is mounted and the protruding end is configured to be electrically connected to the motor housing when the micro-motor connector is installed in the motor housing.

Preferably, in the above-mentioned micro-motor connector, the base can be configured to be suitable for welding to the ground wire, and the protruding end is configured to be arranged on the outer surface of the motor housing and pass through The screw connection is fixed on the motor housing.

Preferably, in the above-mentioned micro-motor connector, the first insulator may have an inner cavity and a groove is provided in the outer surface facing the first sealing ring, and the first arm extends through the first insulator to at least partially into the lumen, and the second arm is at least partially positioned in the groove.

Preferably, in the above-mentioned micro-motor connector, the first insulator may have an inner cavity, and the power terminal and the signal terminal respectively partially extend through the first insulator to enter the inner cavity and be fixed on the first insulator , so as to be able to make electrical contact with the corresponding terminal of the mating connector.

Preferably, in the above-mentioned micro-motor connector, the first insulator can be provided with a limiting device, and the limiting device is configured to be erected on the opening of the motor housing when the micro-motor connector is installed in the opening of the motor housing. on the outer surface near the opening.

According to another aspect of the present utility model, a connector assembly is provided, which is suitable for being installed on the motor housing of the micro-motor and electrically connecting the micro-motor and the servo unit via a cable, the connector assembly includes:

The above-mentioned micro-motor connector;

a mating connector connected to the micromotor connector, the mating connector includes a connector housing and a terminal assembly disposed within the connector housing; and

a second seal ring arranged to surround the terminal assembly and the first ground terminal and positioned in a portion of the connector housing that will contact the motor housing for when the connector assembly is mounted on the motor Forms a seal between the connector housing and the motor housing when the housing is on.

Preferably, in the above connector assembly, the terminal assembly may include a second insulator partially inserted into the first insulator and a plurality of connection terminals located in the second insulator, the plurality of connection terminals It includes the second ground terminal, and a corresponding terminal in electrical contact with the power terminal and the signal terminal of the micro-motor connector.

Preferably, in the above connector assembly, the connector housing can be configured to be fixed to the motor housing by bolts on the outside of the second sealing ring.

Preferably, in the above connector assembly, the connector housing may have an opening side facing the motor housing, a circumferential groove is provided in the opening side, and the second sealing ring is arranged in the circumferential groove.

Readers will be able to better understand other purposes, features and advantages of the present utility model after referring to the following detailed embodiments, related drawings and patent claims.

Description of drawings

The principle of the utility model can be better understood with reference to the subsequent illustrations and descriptions. For non-specific and non-limiting embodiments, please refer to the description of the subsequent figures. The components in the illustrations are not necessarily to scale, but rather are intended to illustrate the principles of the invention in an emphasized manner. In the drawings, the same elements are marked with the same corresponding parts in different drawings.

Fig. 1 is a schematic diagram showing the principle of connecting a servo motor to a servo unit by using a connector assembly;

FIG. 2 is a schematic perspective view showing an embodiment of a connector assembly according to the present invention;

Fig. 3 is a schematic sectional perspective view showing a connector assembly including a micro-motor connector and a mating connector according to the present utility model;

Figure 4a is an exploded view showing some components of the micro-motor connector shown in Figure 3 before assembly;

Figure 4b is a schematic diagram showing the assembly of some components of the micro-motor connector;

Fig. 5 is a schematic diagram showing an embodiment of a grounding terminal of the micro-motor connector according to the present utility model;

Fig. 6 is a cross-sectional view of the connector assembly according to the present invention, showing the connection state between the micro-motor connector and the mating connector;

7 is a schematic cross-sectional view of the connector assembly shown in FIG. 3 at the ground terminal; and

Fig. 8 shows a state in which the connector assembly according to the present invention is installed on the motor housing, wherein the connector housing is removed.

specific embodiment

The technical solutions of the present utility model will be further described below through specific embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar components are denoted by the same or similar reference numerals. The following descriptions of various embodiments of the utility model with reference to the accompanying drawings are intended to illustrate the general concept of the utility model, but should not be construed as a limitation of the utility model.

2 and 3 show an embodiment of the connector assembly according to the present invention. As previously mentioned and shown in FIG. 1 , in one application, a connector assembly 10 may be provided on a micromotor or a servo motor 1 , and the servo unit 2 and the micromotor 1 communicate electrically through a cable 3 and the connector assembly 10 , such as transmitting signals or supplying power to servo motor 1.

As shown in FIGS. 2 and 3 , the connector assembly 10 includes a micromotor connector 200 and a mating connector 100 . The micromotor connector 200 is suitable for being installed in the opening of the motor housing 11 of the micromotor and mated with the mating connector 100 , and is electrically connected with the internal circuit of the micromotor 1 . The mating connector 100 is suitable for connecting the cable 3 . As will be described below, the terminals of the micromotor connector 200 are in electrical contact with the corresponding terminals of the mating connector 100 , so that the servo unit 2 and the micromotor 1 can communicate electrically with each other through the cable 3 and the connector assembly 10 .

The mating connector 100 can be fixed on the motor housing 11 of the micromotor 1 by, for example, bolts 111 . Specifically, the mating connector 100 includes a connector housing 110 adapted to be fixed on the motor housing 11 and a terminal assembly disposed in the connector housing. Screw holes for receiving bolts 111 may be provided on the connector housing 110 , for example, at four corners of the connector housing 110 . Those skilled in the art will understand that the fixing of the connector assembly 10 on the motor housing is not limited to this, and various other suitable fixing methods may also be used, such as bonding, welding and the like. A receiving end 112 for receiving a cable may be provided on one side of the connector housing 110 , so as to realize, for example, the electrical connection between the main circuit cable 3 and the connector assembly 10 .

As shown in FIG. 3 , in one embodiment, the connector housing 110 is open on the side facing the motor housing 11 , so that when the connector assembly 10 is installed on the motor housing 11 The housing 11 is formed together to accommodate a space in which a terminal assembly of the connector assembly is accommodated.

As shown in FIGS. 3-7 , the micromotor connector 200 includes a first insulator 220, a plurality of power terminals 242, signal terminals 243, and a first ground terminal 241 disposed in the first insulator 220 and adapted to be electrically connected to the micromotor. , and the first sealing ring 230. As shown in FIG. 4a and FIG. 6, the first insulator 220 may have an inner cavity 221, and the power terminal and the signal terminal respectively partially extend through the first insulator to enter the inner cavity 221 and be fixed in the first insulator 220, thereby Capable of making electrical contact with corresponding terminals of a mating connector.

As shown in Figures 3, 6 and 7, the terminal assembly of the mating connector 100 includes a second insulator 120 partially inserted into the first insulator 220 and a plurality of terminals located in the second insulator 120, the plurality of terminals It includes the second ground terminal 141 and the corresponding terminals in electrical contact with the power supply terminal and the signal terminal of the micro-motor connector (as shown in FIGS. 6 and 7 ). The first insulator 220 and the second insulator 120 may be made of an insulating material, such as plastic, and may be an integral molding such as formed by injection molding.

According to the utility model, the first ground terminal 241 is configured to be electrically connected with the ground wire (not shown) of the micromotor and the motor casing 11 when the micromotor connector 200 is installed in the motor casing 11, and is suitable for In order to make electrical contact with the second ground terminal 141 of the mating connector 100 , the ground function of both the connector assembly 10 and the motor housing 11 can be realized simultaneously. The first sealing ring 230 surrounds or covers the first insulator 220 and the first ground terminal 241, so that when the micro-motor connector is installed in the motor housing, there is a gap between the first insulator, the first ground terminal and the motor housing. Form a seal between them to effectively prevent dust, moisture or moisture from entering the micromotor.

In the example shown in FIG. 3, an assembly composed of a first insulator 220, a first ground terminal 241 and a first sealing ring 230 is inserted into an opening in the motor housing 11, wherein the first ground terminal 241 and the first Most of the insulator 220 and the entire first sealing ring 230 are positioned below the outer surface of the motor housing 11 to form a tight seal between the first insulator 220 and the first ground terminal 241 and the motor housing 11 .

4a and 4b show the state before and after assembly of the assembly composed of the first insulator 220, the first ground terminal 241 and the first sealing ring 230. After the first ground terminal 241 is positioned on the first insulator 220 , the first sealing ring 230 is sleeved on the first ground terminal 241 and the first insulator 220 . In one example, the first insulator 220 is provided with a groove 222 on the side facing the first sealing ring 230 , and at least a part of the first ground terminal 241 is embedded in the groove 222 . The first sealing ring 230 can be any suitable sealing member, such as a wavy or rectangular ring, whose shape matches the shape of the first insulator 220 . For example, the first sealing ring 230 may be a stacked structure formed of a plurality of rectangular washers to surround the first insulator 220 more or less as needed to accommodate the first insulator 220 or insulators of different sizes.

In the example shown in FIG. 4 a , the first ground terminal 241 is substantially U-shaped, and the first ground terminal 241 is illustrated in detail in FIG. 5 . In this example, the first ground terminal 241 has a first arm 2410, a second arm 2412, a base 2411 located between and connecting the first arm 2410 and the second arm 2412, and a first arm 2412 away from the second arm 2412. The protruding end 2413 of the arm 2410 extends. The protruding end 2413 may extend parallel to the base 2411 or parallel to the outer surface of the motor housing 11, for example forming a substantially " ” shape. The second arm 2412 can be embedded in the groove 222 of the first insulator 220 so that the protruding end 2413 can protrude out of the first sealing ring 230 .

As shown in FIGS. 7 and 8 , the protruding end 2413 may extend on the outer surface of the motor housing 11 and be fixed on the motor housing 11 by the screw 13 inserted into the screw hole 2414 thereof. Those skilled in the art will understand that the electrical connection between the protruding end 2413 and the motor housing 11 is not limited to screw connection, and other connection methods, such as welding, can also be used. Moreover, in the case of convenient operation, the protruding end 2413 can be fixed on the inner surface of the motor housing 11, so that the entire ground terminal is located in the motor housing 11, so as to achieve better sealing of the first ground terminal 241 .

As shown in FIGS. 6 and 7 , the first arm 2410 extends through the first insulator 220 to at least partially enter the inner cavity 221 , and at least partially enters the second insulator 130 to communicate with the ground terminal 141 in the second insulator 130 . Electrical contact, thereby achieving electrical grounding of the connector assembly 10 . Further, the base portion 2411 of the first ground terminal 241 is adapted to be electrically connected to the ground wire (not shown) of the micromotor when the connector assembly 10 is fixed on the motor housing 11 . For example, as shown in FIGS. 5 and 7 , a hole 2415 may be provided in the base 2411 , and the hole 2415 is connected to the ground wire of the micromotor, such as soldered.

In the example illustrated in Figures 4a and 5, the first ground terminal 241 is formed as a unitary member, eg stamped and formed in one piece from a conductive material such as copper. Of course, various parts of the first ground terminal 241 may be formed separately and then connected, such as welded together. Moreover, the shape of the first ground terminal 241 is not limited to the above-mentioned U-shape, but any shape or structure that can be electrically connected to the second ground terminal of the mating connector, the motor case of the micromotor, and the ground wire can be adopted.

According to an embodiment of the present utility model, as shown in FIGS. 3 , 6 and 7 , the connector assembly 10 may further include a second sealing ring 130 , and the second sealing ring 130 surrounds the entire terminal assembly and the first grounding terminal 241 is arranged on the electric between the motor housing 11 and the connector housing 110 to form a seal between the motor housing 11 and the connector housing 110 when the connector assembly is fixed on the motor housing. As shown in the figure, the exposed portion of the terminal assembly on the outer surface of the motor housing 11 and the protruding end 2413 of the first ground terminal 241 are all positioned inside the second sealing ring 130, thereby providing the connector assembly and the micromotor with Further effective waterproof function.

In the examples shown in 2, 3, 7 and 8, the connector housing 110 is adapted to be fixed to the motor housing 11 on the outside of the second sealing ring 130, for example by bolts 111 (shown in FIG. 2 ) and The threaded connection between the threaded holes 12 on the motor housing 11. As further shown in FIGS. 3 and 7 , in one example, the connector housing 110 has an opening side facing the motor housing 11 , and a circumferential groove is provided in the opening side, and the second sealing ring 130 can be arranged in the circumferential groove. groove, thereby forming a seal between the motor housing 11 and the connector housing 110 when the electrical connector is secured to the motor housing. Likewise, the second sealing ring 130 may be any suitable sealing member, such as a gasket, an O-ring or a rectangular ring, and the like.

According to an embodiment of the present invention, the first insulator 220 can be provided with a limiting device 250, which is suitable for erecting on the outer surface of the motor housing close to the opening, so that the micro-motor connector can be properly connected. Locate in the opening of the motor housing. In one example, the limiting device 250 may be a shelf, a baffle, a limiting bar or a protruding part connected to the first insulator 220 or an integral part thereof, for realizing the correct positioning of the insulator on the motor housing .

According to the utility model, when realizing the sealing of the micro-motor and its connector, for example, while realizing the IP67 waterproof level, the grounding terminal of the micro-motor connector is used to realize the grounding function of both the motor housing and the connector assembly, It well meets the needs of the current development of micro-motor connectors.

It should be understood that the above-mentioned embodiments and drawings are only for those skilled in the art to have a general understanding of various embodiments of the present utility model. These illustrations and descriptions are not intended to be a complete description of all elements and features of devices and systems utilizing the structures or methods described herein. By reading the description of the utility model, those skilled in the art will be able to understand many other embodiments of the utility model, which will be derived from the disclosed content of the utility model. Under the condition of not departing from the scope of protection of the utility model, the utility model can be replaced and changed in structure and logic. In addition, the drawings of the present invention are for illustration purposes only and are not drawn to scale. Some parts in the drawings may be exaggerated for emphasis, while other parts may be omitted. Therefore, the specification and drawings of the present utility model should be regarded as descriptive rather than restrictive, and will be limited by the scope of protection of the following claims. It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element references in the claims should not be construed as limiting the scope of the invention.

Claims (10)

1. A micro-motor connector (200), suitable for being installed in the opening of the motor housing (11) of the micro-motor and matingly connected with the mating connector (100), it is characterized in that the micro-motor connector includes : a first insulator (220); a plurality of power terminals (242) and signal terminals (243), disposed in the first insulator and adapted to be electrically connected to an internal circuit of the micromotor; The first ground terminal (241) is configured to be electrically connected with the ground wire of the micromotor and the motor casing when the micromotor connector is installed in the motor casing, and is adapted to be connected with the second ground terminal of the mating connector (141) electrical contacts; and A first sealing ring (230), arranged around the first insulator and the first ground terminal, to form between the first insulator and the first ground terminal and the motor housing when the micro-motor connector is installed in the motor housing seal. 2. The micro-motor connector according to claim 1, characterized in that, The first ground terminal is substantially U-shaped and has a first arm (2410), a second arm (2412), a base (2411) between the first and second arms, and a a projecting end (2413) of an arm extending away from said first arm, wherein the first arm is adapted to make electrical contact with a second ground terminal, the base is configured to be electrically connected to the ground wire when the micromotor connector is installed in the motor housing, and The protruding end is configured to electrically connect with the motor housing when the micromotor connector is installed in the motor housing. 3. The micro-motor connector according to claim 2, characterized in that, the base is configured for soldering to the ground wire, and The protruding end is configured to be suitable for being arranged on the outer surface of the motor housing and fixed on the motor housing through screw connection. 4. The micro-motor connector according to claim 2 or 3, characterized in that, The first insulator has an inner cavity (221) and is provided with a groove (222) in the outer surface facing the first sealing ring, the first arm extends through the first insulator to at least partially enter the lumen, and The second arm is at least partially positioned in the groove. 5. The micro-motor connector according to any one of claims 1-3, characterized in that, the first insulator has a lumen, and The power terminals and signal terminals respectively partially extend through the first insulator to enter the inner cavity and are fixed in the first insulator so as to be able to make electrical contact with corresponding terminals of the mating connector. 6. The micro-motor connector according to any one of claims 1-3, characterized in that, The first insulator is provided with a limiting device (250), and the limiting device is configured to be erected on the outer surface of the motor housing close to the opening when the micro-motor connector is installed in the opening of the motor housing. 7. A connector assembly (10), suitable for being installed on the motor housing of the micro-motor and electrically connecting the micro-motor and the servo unit via a cable, is characterized in that the connector assembly includes: The micro-motor connector according to any one of claims 1-6; A mating connector connected to the micromotor connector, the mating connector includes a connector housing (110) and a terminal assembly disposed in the connector housing; and A second sealing ring (130) arranged to surround the terminal assembly and the first ground terminal and positioned in a portion of the connector housing that will be in contact with the motor housing for mounting the connector assembly When on the motor housing, a seal is formed between the connector housing and the motor housing. 8. The connector assembly of claim 7, wherein, The terminal assembly includes a second insulator partially inserted into the first insulator and a plurality of connection terminals located in the second insulator, the plurality of connection terminals including the second ground terminal, and a micromotor The corresponding terminals where the power terminals and signal terminals of the connector are in electrical contact. 9. The connector assembly according to claim 7 or 8, characterized in that, The connector housing is configured to be fixed on the motor housing by bolts on the outside of the second sealing ring. 10. The connector assembly according to claim 7 or 8, characterized in that, the connector housing has an open side facing the motor housing with a circumferential groove provided therein, and The second sealing ring is arranged in the circumferential groove.